#645C69

#645C69

Color Values

HEX

#645C69

RGB

100, 92, 105

HSL

276.9, 6.6%, 38.6%

HSV

276.9, 12.4%, 41.2%

CMYK

4.8%, 12.4%, 0.0%, 58.8%

OKLCH

0.4869 0.0227 312.6

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#645C69

#61695C

Analogous

#5D5C69

#695C67

#645C69

Triadic

#645C69

#69645C

#5C6964

Split Complementary

#645C69

#67695C

#5C695D

Tetradic

#645C69

#695D5C

#61695C

#5C6769

Color Blindness Simulation

Original

#645C69

Protanopia

#616066

Deuteranopia

#616265

Tritanopia

#646363

Achromatopsia

#5F5F5F

CSS Usage

background-color: #645C69;
color: #645C69;
border-color: #645C69;
Nearest Tailwind: Zinc 600 #52525B

Tailwind Shades

50
#F7F7F8
100
#EDECEE
200
#DCD9DE
300
#C3BEC6
400
#A29AA7
500
#817788
600
#685F6D
700
#534C57
800
#413C44
900
#312E33
950
#1F1D20

Contrast Checker

Text on white

6.41:1

AA Pass AAA Fail

Text on black

3.28:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026